[ci] remove jruby-head until we can address #2490 (#2494)

.github/workflows/sentry_delayed_job_test.yml

@@ -47,6 +47,7 @@ jobs:
           # LoadError:
           #  cannot load such file -- mutex_m
           - { ruby_version: "head" }
+          - { ruby_version: 'jruby-head' }
     steps:
       - uses: actions/checkout@v1
       - name: Install sqlite

.github/workflows/sentry_opentelemetry_test.yml

@@ -43,6 +43,8 @@ jobs:
                   rubyopt: "--enable-frozen-string-literal --debug=frozen-string-literal",
                 },
             }
+        exclude:
+          - { ruby_version: 'jruby-head' }
     steps:
       - uses: actions/checkout@v1
 

.github/workflows/sentry_resque_test.yml

@@ -41,6 +41,8 @@ jobs:
                   rubyopt: "--enable-frozen-string-literal --debug=frozen-string-literal",
                 },
             }
+        exclude:
+          - { ruby_version: 'jruby-head' }
     steps:
       - uses: actions/checkout@v1
       - name: Set up Ruby ${{ matrix.ruby_version }}

.github/workflows/sentry_ruby_test.yml

@@ -59,6 +59,8 @@ jobs:
               rack_version: 3.1,
               redis_rb_version: 5.3
             }
+        exclude:
+          - { ruby_version: 'jruby-head' }
     steps:
       - uses: actions/checkout@v1